Shutters for Angled, Apex and Gable Windows

Angled glazing is nearly always high up, which means privacy is rarely the problem. What drives the enquiry is low winter sun straight into a television, or a first floor landing that becomes unbearable on a July afternoon, or a vaulted lounge that loses its heat through a wall of untreated glass every night.

That changes the specification. Where a bay is about controlling sightlines, an apex is about controlling a beam of light at a specific time of day, so the louvre angle we fix the raked section at is chosen from where the sun actually sits, not from a default.

Apex over a rectangle. A triangular fixed top sitting on a fully operational rectangular panel. Standard on new build show homes and modern extensions around Chapelford, Omega and Sankey.

Full gable end. A large triangle or trapezoid, often three or four metres wide, in barn conversions across Lymm, Daresbury and Antrobus. Usually built as several fixed panels sharing mitred posts.

Raked staircase window. One edge follows the stair pitch. Common on 1930s semis and townhouses in Grappenhall and Stockton Heath, and the panel is templated so the raked edge runs parallel with the string of the stairs.

Trapezoid or single sloped head. Where the window head slopes but never reaches a point. Frequent on dormer conversions and loft rooms.

A louvre tilts because both ends sit on pins running on a common horizontal axis. In a triangle, every louvre is a different length and no two share an axis that would let them rotate together, so the blades are set at a chosen angle and stay there.

In practice this matters less than it sounds. Set the rake louvres at about 45 degrees facing upward and you kill direct glare while keeping the sky visible, and the operational rectangular section below does the day to day work.

• Set louvres upward to block low sun and retain a view of the sky
• Set them downward where the apex overlooks a neighbouring property
• Set them flat where the goal is purely to soften a bright wall of glass

Gable and apex work often sits three metres or more above a floor, sometimes above a stairwell with no flat footing. We survey the access at the same visit as the window, because the fitting method, the tower or platform needed, and occasionally a two fitter day, all belong in the quote rather than appearing as a surprise.

Panel weight also drives the material. A wide gable triangle in engineered board becomes a heavy, awkward object to hang at height, so anything over roughly two metres on its base goes into hardwood.